IP Library › Granted Patent US 12,191,443
Granted Patent B2
US 12,191,443 · App. 16/947,793 · Granted Jan 7, 2025

Argyrodites doped with thiophilic metals

Inventor: Benjamin Rupert (Berkeley, CA)
Assignee: Blue Current, Inc.
H01M10/0562C01B25/14C01D15/00H01M4/5815H01M10/0525C01P2002/72C01P2002/76C01P2002/77C01P2006/40H01M2300/0082H01M2300/0091
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Quick Facts
Patent No.
US 12,191,443
App. No.
16/947,793
Granted
Jan 7, 2025
Kind
B2
Abstract

Provided herein are solid materials that are ionically conductive and electrochemically stable. Embodiments of the solid materials are argyrodite-type compositions that have high ionic conductivity. The compositions include small amounts of thiophilic metals, whose binary sulfides do not react with water to hydrogen sulfide (H 2 S). As such, H 2 S release is minimized or eliminated. Also provided are methods of fabricating the materials and batteries and battery components containing the materials.

Claims (34)

1. A composition comprising:

an alkali metal argyrodite sulfide-based halogen-containing ion conductor doped with a thiophilic metal,

wherein the thiophilic metal is selected from manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), mercury (Hg), molybdenum (Mo), and combinations thereof, wherein the ratio of thiophilic metal atoms to sulfur atoms in the alkali metal argyrodite sulfide-based ion conductor is between 1:120 and 1:20.

2. The composition of claim 1 , wherein the alkali metal is lithium (Li), sodium (Na) or potassium (K).

3. The composition of claim 1 , wherein the alkali metal is lithium.

4. The composition of claim 1 , wherein the alkali metal argyrodite sulfide-based ion conductor is given by the formula:

A 7−x-(z*y) M z y PS 6−x Hal x

wherein

A is the alkali metal;

M is the thiophilic metal;

Hal is selected from chlorine (Cl), bromine (Br), and iodine (I);

z is the oxidation state of the metal;

0<x≤2; and

0<y<(7−x)/z.

5. The composition of claim 4 , wherein z>+1.

6. The composition of claim 4 , wherein z=+2.

7. The composition of claim 4 , wherein 1≤x≤1.6.

8. The composition of claim 4 , wherein 0.1≤y≤2−x.

9. The composition of claim 1 , wherein the alkali metal argyrodite sulfide-based ion conductor is given by the formula: A 7−x+n-(z*y) M z y PS 6−x Hal x+n

wherein

A is the alkali metal;

M is the thiophilic metal;

Hal is selected from chlorine (Cl), bromine (Br), and iodine (I);

z is the oxidation state of the metal;

0.05≤n≤0.9

−3.0x+1.8≤n≤−3.0x+5.7

0≤y<(7−x)/z; and

0<x≤2.

10. The composition of claim 9 , wherein z>+1.

11. The composition of claim 9 , wherein z=+2.

12. The composition of claim 1 , wherein the alkali metal argyrodite sulfide-based ion conductor is single phase material.

13. The composition of claim 1 , wherein the argyrodite is Li 5.8 Cu 0.1 PS 5 Cl or Li 5.4 Cu 0.1 PS 4.6 Cl 1.4 .

14. A composition comprising:

a composite film of particles comprising an argyrodite according to claim 1 in a polymer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2020
From: RUPERT, BENJAMIN
To: BLUE CURRENT, INC.
Reel/Frame 054170/0592 →
Continuity (3)
Provisional Application 62952085 · Dec 20, 2019
Provisional Application 62888323 · Aug 16, 2019
Related Publication 20210050620A1 · Feb 18, 2021
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